【文章內(nèi)容簡介】
anches _______________ ( cut) off, and logs _______________( make) .These heavy logs ________________( put) together in different ways and _________________ ( take) down to the foot of the mountains. Some of them _________________ ( float使漂流) down the small rivers and others _________________ ( carry) down on trains. Big trees ________________ ( cut) down in the mountains every year. Then young ones ______________________ ( must, plant) so that we ______ always ________________ ( can, have) enough wood. We have to take good care of mountains so that they __________ always _________________ ( may, cover) with growing trees. 【試題答案】 一、把下列句子變成被動語態(tài) 1. Some jewels were found in a box. 2. The pupils are being kept at school for a revision. 3. A parcel for you has been left by James. 4. The article must be finished before Friday.